Brad Pitt, Angelina Jolie and their children Knox Jolie-Pitt, Pax Jolie-Pitt and Vivienne Jolie-Pitt arrive at Tokyo International Airport on July 28, 2013 in Tokyo, Japan. (Photo by Jun Sato/WireImage)

Brad Pitt, Angelina Jolie and their children Knox Jolie-Pitt, Pax Jolie-Pitt and Vivienne Jolie-Pitt arrive at Tokyo International Airport on July 28, 2013 in Tokyo, Japan. (Photo by Jun Sato/WireImage)

Actress Angelina Jolie and actor Brad Pitt attend the 'World War Z' Japan Premiere at Roppongi Hills on July 29, 2013 in Tokyo, Japan. The film will open on August 10 in Japan. (Photo by Ken Ishii/Getty Images for Paramount Pictures) less

Actress Angelina Jolie and actor Brad Pitt attend the 'World War Z' Japan Premiere at Roppongi Hills on July 29, 2013 in Tokyo, Japan. The film will open on August 10 in Japan. (Photo by Ken Ishii/Getty Images ... more

Actress Angelina Jolie and actor Brad Pitt attend the 'World War Z' Japan Premiere at Roppongi Hills on July 29, 2013 in Tokyo, Japan. The film will open on August 10 in Japan. (Photo by Ken Ishii/Getty Images for Paramount Pictures) less

Actress Angelina Jolie and actor Brad Pitt attend the 'World War Z' Japan Premiere at Roppongi Hills on July 29, 2013 in Tokyo, Japan. The film will open on August 10 in Japan. (Photo by Ken Ishii/Getty Images ... more